CBSE Class 10 Sample Papers 2021 - The Central Board of Secondary Education (CBSE) has released new sample papers with the marking scheme for the upcoming Board Exam 2021. All these sample papers are prepared according to the reduced CBSE syllabus. With the release of the CBSE sample papers, preparations for the board exam will take a kick start as students can now actually prepare according to the pattern followed in the sample papers

Click on the given link:

<a href="http://cbseacademic.nic.in/SQP_CLASSX_2020-21.html" rel="noopener" target="_blank">Class X 2020-2021 SQP and MS - CBSE | Academics Unit</a>

CBSE Class 10 Sample Papers 2021 - The Central Board of Secondary Education (CBSE) has released new sample papers with the marking scheme for the upcoming Board Exam 2021. All these sample papers are prepared according to the reduced CBSE syllabus. With the release of the CBSE sample papers, preparations for the board exam will take a kick start as students can now actually prepare according to the pattern followed in the sample papers

Click on the given link:

<a href="http://cbseacademic.nic.in/SQP_CLASSX_2020-21.html" ping="/url?sa=t&source=web&rct=j&url=http://cbseacademic.nic.in/SQP_CLASSX_2020-21.html&ved=2ahUKEwio8sOKqa_tAhXWzzgGHQ-FD3gQFjAAegQIBBAC" rel="noopener" target="_blank">Class X 2020-2021 SQP and MS - CBSE | Academics Unit</a>

In Bholi’s life, love and encouragement made the impossible possible. Her story showed how, after the teacher handed over the key of education to her, she was able to unlock the door that confined her to the stereotypes and expectations yet lack of appreciation or recognition that the society has imposed on women. Bholi’s excellent character is seen when she expresses her desire to serve the very parents who treated her with disdain as long as she could remember. Also, she was ready to married the unprincipled Bishambernath so as to not go against her parents’ wishes and to protect his dignity. When she saw that the greedy and unruly Bishambernath, her prospective husband was charging her father for upholding his dignity, Bholi decides that her family does not need such an unworthy relationship. Because of her education, she was bold enough to protest and make her own decision as to how she would lead her life and support her parents. Her protest is seen by the society as her insolence. Her character deemed it fit to ignore them. Also, a contrast is seen when Bholi’s sisters become envious of their sister’s rich prospective husband while Bholi refused that so called ‘luck’ because she knew that a person was to be judged by his character and not his wealth.

Ironically, Bholi was sent to school as her mother believed she was a burden and let the teachers at the school worry for her. The teacher showed affection and encouraged her to shed her fear. She was assured by her teacher that she would speak like others one day.

Years of hard work transformed Bholi into a bold and confident young woman. Bishamber refused to marry Bholi due to her appearance and demanded five thousand rupees. Bholi saw how her father was humiliated for no reason. She refused to marry a greedy, mean and contemptible coward. She assured her father that she would serve him and her mother in their old age. She had a mission in her life; she would spread the light of education in her village.

Bholi's mother was an orthodox village woman. She was against the idea of sending her daughters to school. She thought that education would affect their marriage prospects adversely. She thought that education would ruin the marriage prospects of their daughters but Bholi was a simpleton. There was no possibility of her marriage. 

Bholi never knew anything about school. When her father suddenly caught her by the hand, she was frightened because she thought she would also be sold as her old cow, Lakshmi. When she saw that she got to wear decent clothes and got well groomed, she felt that she was going to a better place than her home.

 When Ranga meets Ratna, she is eleven years old. The narrator tricks Ranga by saying that she is already married. This gives the impression that marrying an eleven year old girl is acceptable. Moreover, Ranga and Ratna are both bright individuals, with a bright future ahead of them. The narrator could have wished for Ratna to be educated and could have wished for Ranga to finish his education and find a good job. Yet, his primary focus was on getting Ranga and Ratna married. 

Child marriage is illegal in India for a very good reason. Children who are married young are not mature enough to act like adults and cannot be expected to do things like an adult. They are robbed of their childhood and their innocence. Furthermore, girls who get married young might also be forced to produce children at a young age, which can be dangerous and life threatening for young girls. 

ncert books and  sample papers are enough

Sample papers help students analyse their strengths and weaknesses so that they can focus on weaker sections.

• When students work on improving their weaker sections, they perform better with practising sample papers.
• This enhances their confidence and they do their best to get good marks.
• Also, not just weaknesses, students can also practice their strong sections with sample papers to increase their marks. 

Second Estate: Nobility belonged to 2nd estate of then French Society. Nobility was hereditary and hence a person could get nobility by birth. However, new members were also awarded nobility by monarchy after paying heavy taxes or outstanding service to the monarchy, i.e. nobility could be purchased also.

Bholi's teacher played an important role in changing the course of her life. She was polite and friendly which touched her heart. She encouraged her every time and was affectionate towards her. The teacher transformed her into a confident person who could read, write and speak clearly.This gave her the required confidence. Moreover, teacher’s appreciation and encouragement helped her overcome her low morale.

Hyper Text Markup Language

HTML is a markup language that web browsers use to compose text, images and other material on the web pages. Tim Berners-Lee invented the World Wide Web in 1990 to facilitate sharing and updating information on Web using HTML. To create web pages, text editor and web browser is required.

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Exhaustible resources are those resources which are present in limited quantity and can be completely used up by human activities are called exhaustible resources.
 Exhaustible sources are those sources of energy, which will deplete and exhaust after a few hundred years.

Examples – Coal, petroleum, etc. are the exhaustible sources of energy.

Challenges faced by the Election commission of India before first General
elections: -
1. Delimitation of Electoral constituencies- free and fair elections
2. Absence of electoral rolls. Preparing the election rolls was a huge task
as many citizens were eligible to vote.
3. Illiterate population- did not know details like wife of and daughter
of…15% voters illiterate out of 17 crore eligible voters because of
which special method of voting was needed.
4. Mistake in electoral rolls-Large population and voters to hold free and
fair elections. Large number of staff and infrastructure for the first time 

Refining of petroleum

The crude petroleum oil is a complex mixture of solid,liquid and gaseous hydrocarbons.

So before petroleum can be used for specific purpose,it has to be refined or purified.

The process of separating crude petroleum oil into more useful fractions is called refining.

The refining of petroleum into different fractions is based on the fact that the different fractions of petroleum have different boiling point.

The refining of petroleum is carried out in an oil refinery.

The crude petroleum oil extracted from oil wells is taken to the oil refinery through pipes.In the oil refinery,crude petroleum is oil is refined into different useful fractions.

The separation of petroleum into different fractions is done by fractional distillation.The various useful fractions obtained by the refining of petroleum are:Petroleum gas,petrol,kerosene,diesel,lubricating oil,paraffin wax,Bitumen.

Those chemicals which are obtained from petroleum and natural gas are called petrochemicals.

For Ex:Methyl alcohol,ethyl alcohol,formaldehyde,acetone,acetic acid,ethylene,benzene,toluene,vinyl chloride etc.

They are important because they are used to manufacture large number of useful material such as detergents, synthetic fibres, plastics, synthetic rubber, drugs, dyes, perfumes, fertilisers, insecticides etc.

Hydrogen gas is obtained as a petrochemical from natural gas.It is used in the manufacture of fertilisers.

Petroleum is not only a source of fuels but also provides raw material for manufacture of large number of useful substances.Due to its great importance ,it is called black gold.

Fossil fuels

Exhaustible natural resources like coal, petroleum and natural gas were formed from the dead remains of living organism (fossils). So, these are called fossil fuels. Coal and petroleum are very important natural resources and play a vital role in modem society. They are found in the earth's crust.

It consist mainly of methane (about 85%), ethane (about 10%) propane (about 3%) and butane when natural gas is compressed at high pressure then it is called CNG (compressed natural gas). CNG is used for power generation.

It is now being used as a fuel for transport vehicles because it is less polluting. The great advantage of CNG is that it can be used directly for burning in homes and factories where it can be supplied through pipes. Such network of pjpeline exists in Vadodara (Gujarat) and some parts of Delhi.

This medication is used on the skin to treat the itching, scaling, and flaking due to skin conditions such as psoriasis or seborrheic dermatitis. Coal tar belongs to a class of drugs known as keratoplastics. It works by causing the skin to shed dead cells from its top layer and slow down the growth of skin cells. This effect decreases scaling and dryness. Coal tar can also decrease itchiness from these skin conditions.

Many factors are responsible for motivating youngsters towards alcohol or drugs. Curiosity, need for adventure and excitement, experimentation are the initial causes of motivation. Some youngsters start consuming drugs and alcohol in order to overcome negative emotions (such as stress, pressure, depression, frustration) and to excel in various fields. Several mediums like television, internet, newspaper, movies etc. are also responsible for promoting the idea of alcohol to the younger generation. Amongst these factors, reasons such as unstable and unsupportive family structures and peer pressure can also lead an individual to be dependant on drugs and alcohol.

Preventive measures against addiction of alcohol and drugs:

(a) Parents should motivate and try to increase the will power of their child.

(b) Parents should educate their children about the ill-effects of alcohol. They should provide them with proper knowledge and counselling regarding the consequences of addiction to alcohol.

(c) It is the responsibility of the parent to discourage a child from experimenting with alcohol. Youngsters should be kept away from the company of friends who consume drugs.

(d) Children should be encouraged to devote their energy in other extra- curricular and recreational activities.

(e) Proper professional and medical help should be provided to a child if sudden symptoms of depression and frustration are observed.

(a) Coal is classified into four main types, or ranks: anthracite, bituminous, peat and lignite.

B) Fractions that are separated out include gasoline, diesel, kerosene, and bitumen. Fractional distillation allows a lot of useful products to be made from crude oil, with many environmental consequences for the use of those useful products

c. Sodium metal is kept in kerosene because sodium is very reactive metal. It is kept in kerosene to prevent it from coming in contact with oxygen and moisture. If this happens, it will react with the moisture present in air and form Sodium hydroxide. This is a strongly exothermic reaction, and lot of heat is generated. It will result out in the form of fire.

1. Metal alloys have improved and unique property of hardness and sonority. Also, alloys have excellent ductility. Therefore metal alloys are used for making bells and strings of instruments. For example, bronze is used for making bells and stringed instruments.